The wisdom behind concealing the Night of Decree and the hour in which supplication is answered on Friday

The Shaykh : Similarly, the Night of Decree is concealed. Had Allah (Mighty and Majestic) willed, He would have specified it for His servants precisely. However, He (Glorified and Exalted is He) intended for His servants to know who is eager and who is not. This is from one perspective. From another perspective, it is so that their reward in their deeds would be multiplied throughout all the nights of the ten days. Likewise, the hour of response in one of the nights, because there is an hour in the Sunnah, an hour in one of the nights of the year, in which no Muslim servant who calls upon Allah is denied it. This is regardless of the time of the Divine Descent. Also, the hour of Friday: Did Allah specify it or not? No, He did not specify it, but... it is specified.